One easy way to tell the difference when they're still alive, and an albie can be released if it hasn't fought to the death, is that bonito, like their cousins the wahoo and king mack, have sharp teeth. Albies don't.
Straight lines on the back=bonito
Wavy lines on the back=albie
Albies have two or three black marks that look like fingerprints behind the pectoral fins, too. Short high front dorsal fin, whereas a bone has a lower and longer one.
After you catch a few it'll be a snap.
Blues vs albies? Easy---blues are actually edible
and not a false albacore 
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